Title:
バッテリー駆動デバイス
Document Type and Number:
Japanese Patent JP4842531
Kind Code:
B2
Abstract:
This system provides a method for determining whether ordinary battery cells, a battery pack, and/or a charger unit are attached to a portable electronic device. The system provides a center contact in a battery shaft that contacts a battery pack or a point on an individual battery and allows the device regulation unit to measure the voltage at that point. If the voltage is below a particular threshold, then the system determines that a battery pack may be inserted in the battery shaft and the portable electronic unit enters a battery pack mode. If the voltage is above the threshold voltage, then the portable electronic device enters the battery operation mode. If a voltage transition is sensed on the DEVICE START line, the portable electronic device determines that the charger is installed and the portable electronic device enters the appropriate mode.
Inventors:
Erich Brennel
Application Number:
JP2004295393A
Publication Date:
December 21, 2011
Filing Date:
October 07, 2004
Export Citation:
Assignee:
ACAGE Acoustics GAMBA
International Classes:
G03B17/02; H01M10/44; G03B17/56; H01M10/46; H01M10/48; H02J7/00
Domestic Patent References:
| JP9271144A | ||||
| JP9203752A | ||||
| JP2001256937A |
Attorney, Agent or Firm:
Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita
Takaaki Yasumura
Natsuki Morishita